Bug 998874 - [marionette-apps] Update dependency of marionette-js-client
to 1.1.5.
 - Extend the timout in waitforapp_test.js to 20s.
 - Modify the depency of marionette-js-client as peerDependencies.
Merge pull request #26 from RudyLu/test_dep_client115

Bug 998874 - [marionette-apps] Update dependency of marionette-js-client to peer dependency 1.0.0.
r=evanxd.
 Bug 997045 - Cannot focus on input field when doing element.click().
   - Make switchToApp do switchToFrame with focus.
   - Modify the package.json to depends on marionette-js-client 1.1.6.